Essay: About Firewall

5 May

Essay: About Firewall

Essay: About Firewall

From a security perspective, a very trivial element of a network is a firewall that can exist at multiple places within the network. For example, a single system operating system contains its own copy of the firewall which is a built-in feature of today’s operating systems. Moreover, advanced form of software firewall may be installed on the system. Firewalls even exist at the hardware and software level however we will stick to a software-based firewall for this network since software forms of the firewall are cost-effective. Windows firewalls are available in two types 1) Host-Based firewall 2) Network-Based firewall Network-based firewall technology provides protection to the network or servers in which the exchange of information travels between the user and servers. Windows firewall is used when any user or employee wants to connect to the network and shouldn’t have the right to connect with the network. Firewall blocks that user and protects the network or server. Some firewalls provide sophisticated control like antivirus scanning, web content filtering, and other application-layer filtering which seems not to be the need of this network at the evolutionary stage. We have to keep in mind that since the primary question talks about the handling of applications data we require application servers as well. To maintain 10 applications databases running along with an active directory, firewall, and ISA server we will require a pool of 3-5 application servers to be made part of the network that is secured for being in a separate LAN segment. We suggest that Microsoft Windows 2003 server be used for application servers. Each normal employee system of the network will be running Microsoft Windows 7 version for its elegant graphics, stable architecture, and being lightweight unless a different operating system is required (for example for a developer’s need)
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